Plectofrondicularia sp. A

Bergh, Eugene W. & Compton, John S., 2022, Taxonomy of Middle Miocene foraminifera from the northern Namibian continental shelf, Zootaxa 5091 (1), pp. 1-55 : 12

Plectofrondicularia sp. A

Pl. 1, fig. 21

Description: The test wall is calcareous. The test is flat, with a keeled periphery and pronounced proloculus, with later uniserial chambers extending in an angular arched chevron-shape towards the terminal chamber. The test widens and curves where it narrows towards the apertural end. The sutures are limbate and the aperture terminal, radiate with projecting laminae fusing centrally.

Remarks: The tests are mostly broken and are moderately large in size (up to 0.6 mm in width and 1 mm in length), in trace abundances (<1%).

Life strategy: Species of the genus Plectofrondicularia are infaunal and adapted to suboxic conditions ( Pezelj et al., 2013 and references therein).

Regional occurrence: This species is recorded in middle Miocene sediments from the northern Namibian outer continental shelf, south of the Kunene River mouth (this study) .